Author Question: In a production facility, 10 of the parts produced are defective. With a .95 probability, the sample ... (Read 62 times)

naturalchemist · **on:** Jun 24, 2018

In a production facility, 10 of the parts produced are defective. With a .95 probability, the sample size that needs to be taken if the desired margin of error is 4 is
A. 100
B. 217
C. 95
D. 111

Question 2

If everything is held equal, and the margin of error is increased, then the sample size will
A. increase.
B. remain unchanged.
D. decrease
E. be determined by the sample proportion.

ecox1012 · **Reply #1 on:** Jun 24, 2018

Answer to Question 1

Analysis:
A. Incorrect. It requires a sample size of at least 217
B. Correct. It requires a sample size of at least 217
C. Incorrect. It requires a sample size of at least 217
D. Incorrect. It requires a sample size of at least 217
ANSWER : B

Answer to Question 2

Analysis:
A. Incorrect. The sample size will decrease as the margin of error increases.
B. Incorrect. The sample size will decrease as the margin of error increases
C. Correct. The sample size will decrease as the margin of error increases
D. Incorrect. The sample size will decrease as the margin of error increases
ANSWER : C